Where do additional action paramters go in the ElasticSearch bulk api?

Question

I'm building a data backfill script for random dataloss in elasticSearch. I only want to add missing documents in an index from the backup; new versions may already exist and I don't want to lose any updates.

The elasticSearch index api allows me to specify the OpType to not update records: https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/api-reference.html#api-index e.g. [opType=create]

and I'm trying to use the bulk api to make it more efficient: https://www.elastic.co/guide/en/elasticsearch/reference/6.6/docs-bulk.html

What I can't figure out is where to put the 'opType' in the bulk api.

is it in the metadata field so it looks like the following?

{ 'index': { '_index': indexName, '_type': 'data', '_id': <my Id>, 'opType': 'create' } } {data for item}

or do I put it somewhere else?

Answer 1

As explained in the link you refer to, if you want to use the same semantics as opType: create you need to use the create command instead of the index one:

 change this
      |
      v
{ 'create': { '_index': indexName, '_type': 'data', '_id': <my Id>} }
{ data for item }